Stock quotation projecting machine



June 23, 1936. A. D. EITZEN STOCK QUOTATION PROJECTING MACHINE ATTORNEYJune 23, 1936. A. D. EITZEN 2,045,537

STOCK.QUOTATION PROJECTING MACHINE' Filed May 13, 1930 4 Sheets-Sheet 2INVENTOR Azguat a ijtzwz, BY 74 ATTORNEY June 23, 1936. D, E|TZEN2,045,537

STOCK QUOTATION PROJECTING MACHINE Filed May 13, 19:50 4 Sheets-Sheet a75 76 I 74 8/ 4. If 3 78 55 Z; --Z I as i ATTORNEY June 23, 1936. A. D.EITZEN I 4 STOCK QUOTATION PROJECTING MACHINE Filed May' 13, 1950 4Sheets-Sheet 4 INVENTOR WAD/ ATTORN EY Patented June 23, 1936 PATENTOFFICE STOCK QUOTATION PROJECTING MACHINE August 1). Eitzen,

News Projection Corporation, a corporation of New York Flushing, N. Y.,assignor to New York, N. Y.,

Application May 13, 1930, Serial No. 451,921

41 Claims.

This invention relates to a stock quotation projecting machine.

Among the objects of the present invention it is aimed to provide animproved stock quotation projecting machine in which the controllinmechanism for the tape feed is disposed beyond the discharge end of theprojecting mechanism.

It is still a further object of the present invention to provide animproved tape pulling mechanism whereby the start and stop of thepulling action is gradual-and does not depend upon the inertia of anelectric motor or the like.

These and other features, capabilities and advantages of the inventionwill appear from the subjoined detail description of specificembodiments thereof illustrated in the accompanying drawings in whichFigure 1 is a front elevation of a projecting machine equipped accordingto the present invention; I

Fig. 2 is an end elevation of the same;

Fig. 3 is an enlarged transverse section of a part of the improvedcontrolling mechanism;

Fig. 4 is a section on the line 4-4 of Fig. 3;

Fig. 5 is an end elevation of the controlling mechanism illustrated inFig. 3;

Fig. 6 is a fragmental section on the line 6-6 of Fig. 3;

Fig. 7 is a side elevation, partly in section, showing the associationof the control mechanism with the motor and clutch when a continuouslyoperating motor is used; and

Fig. 8 is a side elevation with parts broken away diagrammaticallyshowing the association of the control mechanism with a motor when theoperation of the motor is directly controlled by the control mechanism.

In the embodiment shown in Figs. 1 to '7 inclusive, the ticker tape Tissues from the ticker illustrated generally as a high speed ticker,passes to the stock quotation projecting machine generally designated asthe reference character 2, from there passes to the control mechanismgenerally designated as the reference character 3 and then down to thereel 4. The projecting machine 2 is of the type extensively used, havinga lamp housing 5, an extension 5 provided with a light aperture acrosswhich the tape T passes, and an objective lens I disposed above thelight aperture and secured to the lamp housing by the bracket 8 fromwhich the light beam and images are directed onto the mirror 9 of thescreen housing In, from which mirror 9 the images are directed onto themirror II and then onto the screen l2.

At the front end of the light aperture on the extension 6, there isprovided a contact member l3 for engaging the tape and smoothing out thesame before it passes across the light aperture to dissipate anyvibrations transmitted to the tape by the ticker.

The tape control mechanism, which also serves as the tape puller,consists essentially of a cylindrical faced element M to receive thetape, the tape passing ,around the cylindrical face of the element l4and being frictionally held in engagement with the same by the pressureroller l5 mounted on the end of the am Hi pivotally mounted on the pin|1 secured to the side of the housing l8 extending from the lamp housing5. The short arm I!) of the lever the spring 20 to the abutment 2|formed on the extension 22 of the housing l8 for resiliently pressingthe pressure roller |5 against the cylindrical portion |4.

As will appear from Fig. 1, the tape passes around the cylindricalsurface of the device |4 I6 is connected by and then up and over thepressure roller l5, and

then down around the finger 23 of the brake arm 24 whose surface 25engages the brake drum 26 of the reel 4. The shaft 21 of the reel 4, andtherefore also of the brake drum 26, is journaled in the lower end ofthe extension 22. The extension 22 has an arm 28 extending downwardtherefrom to the end of which is pivotally connected the lower end ofthe brake lever or arm 24. The shaft 21 has a sheave 29 fixed on itsrear end which is connected by the spring belt 30 with the sheave 3| onthe shaft 32 on which the control roller I4 is freely rotatable.

As is clearly shown in Fig. 7, the shaft 32 has a gear 33 mountedthereon which meshes with the pinion 34 on the shaft 35 mounted in thecasing H3. The shaft 35 has mounted thereon the sheave 36 which isconnected by the belt 31 with the sheave 38 on the shaft 39 of the motor40. The sheave 36 is freely mounted on the shaft 35 and has fixedthereto the clutch member 43 adapted to attract the disc 4| which isfixed to the shaft 35. v

As shown in Fig. 'l, the disc 4| is normally spaced from the coil 42 ofthe magnet 43 by the spring 44. The magnet 43 is provided with thecollector rings 45 and 46, the collector ring 46 being engaged by thebrush 4! which is connected by the conductor 48 to the outlet plug 49and the collector ring 45 being engaged by the brush 50 which isconnected by the conductor 5| with the brush 52. The brush 52, see Fig.3, is disposed to engage the collector ring 53 of the cylindrical memberI4. The cylindrical member I4 is provided with a second collector ring54 which is engaged by the brush 55 which is connected to the outletplug 48 by the conductor 56.

As shown in Figs. 3 and 4, the collector ring 54 is connected by theconductor 51 with the contact 58 mounted on the cylindrical portion 59of the cylindrical device I4, and the collector ring 53 is connected bythe conductor 68 with the contact 6| which is mounted on the free end ofthe arm 62 fixed on the shaft 32 centrally of the cylindrical device I4.The motor 40 is connected by the conductors 63 and 64 to the outlet plug65. The hub 66 of. the arm 62 has connected thereto one end of a coilspring 61, the other end of which is secured to the disc portion 68 ofthe cylindrical device I4 adjacent to the cylindrical wall 59thereof.

From the foregoing, it will be seen that when the ticker I startsoperating and feeding the tape T therefrom, assuming the contacts 6| and58 to be open as illustrated in Fig. 4, the tension in the spring 61will first act upon the cylindrical device I4 to bring the contact 58into engagement with the contact 6|. Thereupon, through the brushes 55and 52 the current from the outlet plug 49 will pass through the magnet43, see Fig. '7, to energize the same and attract theclutch disc 4|,whereupon the shaft 35 will be drivingly connected to the sheave 36which is driven by the motor 40 being connected by the belt 31 to thesheave 38 of the motor 48. In turn, the shaft 35 through its pinion 34being in mesh with the gear.

33 will actuate the shaft 32 on which the arm 62 is mounted and rotatethe shaft 32 in the direction of the arrow 69, see Fig. 5, to actuatethe cylindrical device I4 to cooperate with the pressure roller I as atape puller on the tape T. This tape pulling action willat all times beyieldable, due to the fact that the shaft 32 is not positively connectedto the cylindrical device I4 but only drives it through the interveningspring 61.

From the foregoing it will also appear that when the ticker I comes torest and stops feeding the tape T therefrom, the tape T will act on thecylindrical device I4 to stop the same, while the arm 62 will continueto rotate with the shaft 32. As soon as the arm 62 causes the contact 6|to leave the contact 58, the circuit to the magnet 43 will beinterrupted to release the clutch disc 4| and thereby free the shaft 35from rotation with the sheave 36. Consequently, the arm 62 will onlymove a short distance beyond the con,- tact 58, just suflicient toeffect an interruption in the current to the magnet 43.

In order to prevent the spring 61 actuating the cylindrical housing I4too suddenly when the ticker starts, the control mechanism now to bedescribed has been provided. r This control mechanism consistsessentially of a gear 18 rotatably mounted in the bearing 1| fixed onthe shaft 32. This gear meshes with the spur gear 12 mounted on theshaft 13 in the journal 14 secured to the cover formed on thecylindrical device |4.- The cover portion 15 is provided with anenlargement 16 having a chamber 11 in which operates the disc 18 formingthe end of the shaft 13. On the disc '18 are pivotally mounted thefriction shoes 18 and 80 for cooperating with the cylindrical surface 8|formed in the enlargement 16. The cover portion 15 and cylindricaldevice I4 are provided with the ball bearing faces 82 and.- 83respectively as illustrated in Fig. 3. The bearing H is provided withthe rollers 84 for engaging the gear 10, to allow rotation in acounter-clockwise direction only and to lock when gear is turnedclockwise in relation to center clutch member 94 of the bearing member1I.

From the foregoing it will appear that when the cylindrical housing I4starts to turn upon slack being formed in the tape T by the operation ofthe ticker I, it will cause the gear 12 to rotate relative to the cover15 by its engagement with the gear 10, and immediately upon suchrotation will cause the shoes 19 and 88 to fly outward by centrifugalforce into engagement with the cylindrical surface 8| of the enlargement16 thereby to impede the free rotation of the gear 12 relative to thedevice I4 and in turn the free rotation of the cylindrical device I4. Assoon as the gear 12 is thus locked against free rotation relative to thedevice I4, it will of course impart a clockwise rotation to the gear 18and thereby cause the roller 84 to ride into locking engagement with theclutch member 94 of the bearing member H in turn to lock the device I4to the shaft 32. This retarding action will prevent the sudden jar thatmight ordinarily be transmitted to the tape T by the release of thespring 61 when slack is formed in the tape T and thus prevent the suddensnap of the cylindrical device I4 by the spring 61. Note should also betaken of the fact that the arcuate lever I6 when engaging the face ofthe cylindrical device I4 facing the lamp housing 5 in the oppositedirection to the path of movement of the tape T to the cylindricaldevice I4, will compensate to a certain extent for the rear acting forcein the tape T to the pull of the cylindrical device I4, and thusdiminish the wear on the bearings of the cylindrical device I4 andotherwise cooperate with the free and easy movement of this device. Inthe embodiment illustrated in Fig. 8, the brushes 55 and 52 of thecylindrical device I4 are connected by the conductors 85 and 86 to theoutlet plug 81 and motor 88 respectively. The motor 88 is connected tothe outlet plug 81 by the conductor 89. In this case, the magneticclutch is thus omitted and the contacts 6| and 58 of the cylindricaldevice I4 will act as a switch to close the circuit of the motor 88 whenslack is formed in the tape T. The shaft 80 of the motor 88, as in theother case, is provided with a sheave 8| which is connected by the belt92 to the sheave 93 on the shaft 35. From the shaft through the pinion34, gear 33, shaft 32, sheave 3| and sheave 28 of the shaft 21 on whichthe reel 4 is mounted, these parts may be identical with the partsIllustrated in the embodiment of Figs. 1 to '1 inclusive. In thisembodiment, the motor 88 will be started with the ticker and stoppedwhen the ticker comes to rest whereas, in the other embodiment, themotor is continuously operating during the market hours and the clutchinterposed to connect the tape pulling device ,I! for operation when theticker operates and to disconnect the tape pulling device to come torest when the ticker rest.

It is obvious that various changes and modifications may be made to thedetails of construction without departing from the of the invention asset forth in claims. I

I claim:

1. In a stock quotation projection machine, 8.

comes to the appended general spirit 7 tape smoothing device disposed atthe anterior end oLthe light aperture-eitheprojection maon,saidshaft,,and meansincludingelectric; contactsv for, completing hecan) bf l t 'c c ut o of idb nta s bei ducted chine, a tapepulling-device iorwpulling the tape across the light apertureo! :theprojection -machine, a'motona magnetic-clutchzforoperative: lyconnecting, said tape ipullingdeviceto said motor, and'altension-devicefor initiating the actuation of said pulling; device; independent oi?vsaid motor.

2. In a stock quotation projection; machine, a; tape pulling device forpulling the tape across, the light aperture of the projection machine,tension means for initiating the actuation of said tape pulling device,and a motor for supplementing the tension device in the actuation ofsaid pulling device. v l I 3. In a tape pulling device, the combinationwith a tape receiving cylindrical member, of actuating means foractuating said cylindrical member including electric contacts forclosing the circuit of said actuating means, and atension device forinitiating the actuation of said cylindrical member and positioning saidcontacts for closingthe circuit of said actuating means to, cooperatewith said tension device to actuate said cylindrical member.

i. In a tapepulling device, the combination with a cylindrical member,of a driving device, a magnetic clutch ior'connecting said drivingdevice with said cylindrical member, electric contacts inithe circuit ofsaid magnetic clutch, and a tension device for initiating the actuationofsaid cylindrical member and closing said contacts to complete thecircuit of said magnetic clutch.

5. In a tape pulling device, the combination with a tape engagingcylindrical member, of a driving mechanism, a magnetic clutch foroperatively connecting said driving mechanism with said cylindricalmember, means including electric contacts for forming an electriccircuit for said magnetic clutch, and a tension device for initiatingthe actuation of said cylindrical member and closing said contacts tocomplete the cir= cult of said magnetic clutch.

6. In a tape pulling device, the combination with a shaft, of a tapeengaging cylindrical member mounted on said shaft, a drive mechanism, amagnetic clutch for operatively connectingsaid drive mechanism to saidshaft, a tension devicev connecting said shaft to said cylindricalmember for initiating the actuation of said cylindrical member, andmeans including electric contacts for closing the circuit of saidmagnetic clutch operatively connected to said tension device.

7. In a tape pulling device, the combination with a shaft, of a tapeengaging cylindrical member mounted on said shaft, a drive'mechanism, amagnetic clutch for operatively connecting said drive mechanism to saidshaft, a tension device connecting said shaft to said cylindrical memberfor initiating the actuation of said cylindrical member, means includingelectric contacts for closing the circuit of said magnetic clutchoperatively connected to said tension device, and a governor forcontrolling the operation of said tension device.

8. In a tape pulling device, the combination with a tape engagingcylindrical member, of a shaft on which said cylindrical member isrotatably mounted, a coil spring for connecting said shaft to saidcylindrical member, a driving mechanism, a magnetic clutch foroperatively connecting said driving mechanism to said shaft, an

idf arm I and the ether or said cont ct-thee. 1 ing mounted on saidcylindiicalmember, said; coil T spring being operative to initiatethejactuation,

ofsaid cylindrical memberandlto close. said cone tacts.-

9. In 9'. an pulling a d: the combination with a tapeengagingcylindrical member, of a i 3 0 shaft, on which said cylindrical memberis rotate,

ably mounted, a 'coilspringfor connecting said shaft to said cylindricalmember, a driving mechani'sm, a magnetic clutch for operativelyconnecting said driving mechanism to said shaft, an arm onsaid shaft,means including electric contacts for completing the circuit of saidmagnetic clutch, one of said contacts being mounted on said arm and theother of said contacts being mounted on said cylindrical member, saidcoil spring beingoperative to initiate the actuation of said cylindricalmember and to close said contacts, and a governor for controlling themovement of said spring.

10. In a tape pulling device, the combination with a cylindrical member,of a shaft on which said cylindrical member is rotatably mounted, a coilspring for connecting said cylindrical member to said shaft, a drivemechanism, a magnetic clutch for operatively connecting said drivemechanism to said shaft, an arm on said shaft, and means including aswitch for closing the electric circuit of said magnetic clutch, saidswitch having switch elements mounted on said arm and said cylindricalmember, said spring initiating the actuation of said cylindrical memberand actuating said switch elements to close said switch.

11. In a tape pulling device, the combination with a cylindrical member,of .a shaft on which said cylindrical member is rotatably mounted, acoil spring for connecting said cylindrical member to said shaft, adrive mechanism, a magnetic clutch for operatively connecting said drivemechanism, to said shaft, an arm on said shaft, means including a switchfor closing the electric circuit on said magnetic clutch, said switchhaving switch elements mounted on said am and said cylindrical member,said spring initiating the actuation of said cylindrical member andactuating said switch elements to close said switch, and a governoroperatively connecting said cylindrical member to said shaft forcontrolling the actuation of said spring.

12. In a. stock quotation projection machine, a tape pulling roller atthe posterior end of the light aperture of the projection machine, and asingle pressure roller, the tape passing across the light aperture ofthe projection machine then around the tape pulling roller and then backover the pressure roller, said pressure roller exercising pressurethrough. the tape upon the tape pulling roller in the same direction andminishing the wear on the same inaddition to effecting an extensive wrapof the tape on the pulling roller. r

13. In a stock quotation projection machine, a tape pulling roller atthe posterior end of the light aperture of the projection machine, anarcuate lever, a single pressure roller' at the end of said arcuatelever, the tape passingacross the light aperture of the projectionmachine then over the tape pulling rollerand then back over the pressureroller, and a spring for directing the pressure roller to press the tapeinto frictional engagement with the tape pulling roller on the face ofthe tape pulling roller facing the light aperture of the projectionmachine, thereby not only to counteract the lateral thrust on thebearing of the pulling roller and thus diminishing the wear on the samebut also causing the tape to wrap' substantially two hundred and seventydegrees of the periphery of the tape pulling roller.

14. In a stock quotation projection machine, a tape pulling roller atthe posterior end of the light aperture of the projection machine, anarcuate lever, a single pressure roller at the end of said arcuatelever, the tape passing across.

the light aperture of the projection machine,

' then over the tape pulling roller and then back over the pressureroller, and a spring for directing the pressure roller to press the tapeinto frictional engagement with the tape pulling roller on the face ofthe tape pulling roller fac-- ing the light aperture of the projectionmachine coinciding with a tangent substantially perpendicular to thepath of movement of the tape across the light aperture of the projectionmachine, the arcuate lever extending down from the pressure rollersubstantially concentric with the tape pulling roller and said springbeing connected to the lower end of said lever, thereby not onlycounteracting-the lateral thrust on the bearing of the pulling rollerdue to the reaction of the tape being pulled across the light apertureof the projection machine but also causing the tape to wrapsubstantially three-fourths of the periphery of the tape pulling roller.

15. In a stock quotation projection machine, a'

tape pulling device for pulling the tape across the light aperture of aprojection machine, a motor, means for drivingly connecting said motorto said tape pulling device, an electric switch for controlling thecurrent to said motor, and means associated with said pulling device fornormally actuating said switch into circuit making position butyieldable when said pulling device is arrested by an interruption in thesupply of tape to actuate said switch into circuit breaking po-' sition.

16. In a tape pulling device, the combination with a tape engagingcylindrical member, of a shaft on which said cylindrical member isrotatably mounted, a coil spring for connecting said shaft to saidcylindrical member, a motor opernecting said shaft to said roller, amotor operatively connected to said shaft, an arm on said shaft, andmeans including electric contacts for completing the circuit of saidmotor, one of said contacts being mounted on said arm and the other" ofsaid contacts being mounted on said roller, said spring being operativeto initiate the actuation of said roller and to close said contacts.

18. In a tape pulling device, the combination with a tape pullingroller, of a shaft on which said roller is rotatably mounted, a springfor connecting said shaft to said roller and for expending and therebyimparting a rotative impulse to said roller when slack is initiallyformed in the tape, and means for driving said shaft and therewith saidroller after said initial slack has been taken up and for continuingunder its own momentum in turn to contract said spring when said rolleris retarded by ,tension in the tape.

19. In a tape pulling device, the combination with a tape pulling rollercooperating with a,

able connection between said roller and said shaft to expand and therebyimpart a rotative impulse to said roller relative to said shaft whenslack in the tape is initially formed by the tape feed and to contractwhen the slack in the tape is dissipated to permit rotation of saidshaft relative to saidroller after said roller has come to rest.

20. In a tape pulling device, the combination with a tape feed, of atape pulling roller, a pressure idler cooperating with said roller toadvance the tape as it is fed by said feed, a shaft on which said rolleris rotatably mounted, a coil spring for connecting said shaft to saidroller and for expanding and thereby imparting a tape pulling rotativeforce to said roller when slack is formed in the tape, and means fordriving said shaft and therewith said roller when said spring isexpanded and for continuing under its own momentum in turn to contractsaid spring when said roller is retarded by tension in the tape, saidspring serving as a yieldable connection between said roller and saidshaft when the slack in the tape is dissipated to permit a furtherrotation of said shaft relative to said roller after said roller hascome torest. I

21. In a tape pulling device, the combination 'with a tape pullingroller, of a shaft on which said roller is rotatably mounted, a coilspring for connecting said shaft to said roller and for imparting a tapepulling rotative force to said roller when slack is formed in the tape,means for driving said shaft and therewith said roller, said springserving as a yieldable connection between said roller and said shaftwhen the slack in the tape is dissipated to permit a further rotation ofsaid shaft relative to said roller after said roller has come to rest,and control means cooperating with said spring and associated with saidroller for effecting a slow even start to said roller.

22. In a tape pulling device, the combination with a tape pullingroller, of a shaft on which said roller is rotatably mounted. a coilspring for connecting said shaft to said roller and for imparting a tapepulling rotative force to said roller when slack is formed in the tape,means for driving said shaft and therewith said roller, said springserving as a yieldable connection be-, tween said roller and said shaftwhen the slack in the tape is dissipated to permit a further rotation ofsaid shaft relative to said roller after said roller has come to rest,control means cooperating with said spring and associated with saidroller for effecting a slow even start to said roller, said controlmeans consisting of a clutch, and

frictional elements responsive to centrifugal 75 amasseforce to actuatesaid clutch. to. clutchingly; en-, gage saidshaft'with said'rollerfljsure idler cooperating with said'rollerto advance the tape as it is fedby said feed, two actuating means independentjof said tape. feed andoperatively connected tov said roller for successively coming intoaction ,to' successivelyimpart a ro tative moment to said roller asthefltape'is fed by said feed, and a device for disabling one of saidactuating means and iorstoring up energy in theother of said actuatingmeans. c a

24. In a tape pulling device,the combination with a tape pulling roller,of an initial rotation imparting actuator operatively connected to saidroller, a main rotation imparting actuator, a clutch for operativelyconnecting said main actuator to said roller, and means operativelyconnected to said initial actuator to actuate said clutch into clutchingengagement with said roller.

25. In a tape pulling device, the combination with a tape pullingroller,of an initial rotation imparting actuator peratively connected tosaid roller, a main rotation imparting actuator, a clutch foroperatively connecting said main actuator to said roller, and meansoperatively connected to said initial actuator to actuate said clutchinto clutching engagement with said roller, said initial actuator inturn cooperating with said rollerwhen arrested to effect thedisengagement of said clutch.

26. In a tape pulling device, the combination with a tape feed, of atape pulling roller, drive means, and initiating means operativelyconnecting said roller with said drive means to impart a rotative momentto said roller as the tape is fed by said feed, said drive means beingmovable relative to said roller to store up energy in said initiatingmeans when said tape feed is arrested.

27. In a stock quotation projection machine, a. tape smoothing devicedisposed at the anterior end of the light aperture of a, projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture as thesame is fed thereto, a continuously operating motor, a slippage devicefor operatively connecting said motor to said tape pulling device, and amagnetic device for controlling said slippage device, said tape pullingdevice'including a tension device for taking up the initial slack in thetape when the feed to the light aperture is resumed, said tension devicebeing operatively associated with said magnetic device in turn to affectsaid magnetic device to enable said slippage devifi to resume actuationof said pulling device, said tension device cooperating with said tapesmoothing device to maintain the tape smooth at the light aperture whenthe feed to the light aperture is interrupted.

I 28. In a stock quotation projection machine, a tape smoothing'devicedisposed at the anterior end of the light aperture of a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture as thesame is fed there to, a continuously operating motor, a driving memberoperatively connected to operate with said motor, a driven memberoperatively connected to said tape pulling-device, said driving memberbeing free to slip relative to said driven member when the tension inthe tape is increased due, to interrupting the feed to the lightaperture, and a magnetic device for controlling the movesaid tapepullingdevice, said tension device cont of eidd iven member r a ve to sa d dingmemb'er, said tape pulling device including a? tension {device"forftaking up the initial sla'ckfin the tape when the feed'tto thelight ,a'perture' is Q r su d, ai t n de c b in 'o a v va r k sociatedwith'said mag'netic devicein cause saidmagnetic device to resume theactuation of said tape pulling'd'evice, saidtension device cooperatingwith said tape smoothing device "to maintain the tape smooth at' thelight aperture when the feed to the light apertureisinterrupted. 1 29.In a stock quotation projection machine, a? tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine,

a tape pulling device disposed at the posterior 15 end of the lightaperture for pulling the tape across the light aperture asthe same isfedthereto, a continuously operating motor, a driving member operativelyconnected to operate with said motor, a driven member operativelyconnect-' ed to said tape pulling device, said driving member being freeto slip relative to said drivenmember when the tension in the tape isincreased due to interrupting the feed to the light aperture, a magneticdevice for controlling the movement of said driven member relative tosaid driving member including an electromagnet, and an electromagnetcircuit for said electromagnet includ ing a pair of contacts, said tapepulling device including a tension device for taking up the initial 30slack in the tape when the feed to the light aperture is resumed, saidtension device being operatively associated with said contacts to effectthe movement of said contacts relative to one another when the slack inthe tape is so taken up and in 35 turn to control the electric currentthrough said electromagnet to cause said magnetic device to resume theactuation of said pulling device, said tension device cooperating withsaid tape smoothing device to maintain the tape smooth at the 40 lightaperture when the feed to the light aperture is interrupted.

30. Ina stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperturefor pulling the tape across the light aperture as the sameis fed thereto, a continuously operating motor, a driving memberoperatively connected to operate with said motor, a driven memberoperatively connected to said tape pulling device, said driving memberbeing free to slip relative to said driven memberwhen the tension in thetape is increased due to interrupting the feed to the light aperture, amagnetic device for controlling the movement of said driven memberrelative to said driving member including an electromagnet, and anelectrom'agnet circuit. for said electromagnet including a pair ofcontacts, said tape pulling deviceincluding a tension device'ior takingup the initial slack in the tape when the feed to the light aperture isresumed, said tension device being .operatively associated with one ofsaid contacts normally to maintain the same in engagement with the otherof said contacts and to urge one contact into engagement with the otherof said contacts when the slack in the tape is so taken up in turn toclose the circuit of said electromagnet to resume the operation ofoperating with said tape smoothing device to maintain the tape smooth atthe light aperture when the feed to the light aperture is interrupted.31. In a stock quotation projection machine,

a tape smoothing device disposed at the anterior end-of the lightaperture of a projection machine, a tape pulling device disposed at theposterior end of the light aperture for pulling the tape across thelightaperture as the same is fed thereto, a continuously operating motor, adriving member operatively connected to operate with said motor, adriven member operatively connected to said tape pulling device, saiddriving member being free to slip relative to said driven member whenthe tension in the tape is increased due to interrupting the feed to thelight aperture, a magnetic clutch for drivingly connecting the drivenmember with said driving member, and an electromagnet circuit for saidelectromagnet including a pair of contacts, said'tape pulling deviceincluding a tension device for taking up the initialslack in the tapewhen the feed to the light aperture is resumed, said tension devicebeing operatively associated with one of said contacts normally tomaintain the same in engagement with the other' of said contacts and tourge said one contact into engagement with the other of said contactswhen the slack in the tape is so taken-up to close the circuit of saidmagnetic clutch to resume the operation of said tape pulling device,said tension device cooperating with said tape smoothing device tomaintain the tape smooth at the light aperture when the feed to thelight aperture is interrupted.

32. me stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture as thesame is fed thereto, a continuously operating motor, a driving memberoperatively connected to operate with said motor, a driven memberoperatively connected to said tape pulling device, said driving memberbeing free to slip relative to said driven member when the tension inthe tape is increased due to interrupting the feed to the lightaperture, and a magnetic device for controlling the movementof saiddriven member relative to said driving member, said tape pulling deviceincluding a roller and a spring cooperating with said roller to take upthe initial slack in the tape when the feed to the light aperture isresumed, and said spring being operatively associated with said magneticdevice in turn to cause said magnetic device to resume the actuation ofsaid pulling device, said spring cooperating with said tape smoothingdevice to maintain the tape smooth at'the light aperture when the feedto the light aperture is interrupted.

33. In a stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture includinga driven shaft, a rewind reel, a slippage device for drivinglyconnecting said rewind reel to said driven shaft, a roller, and a.spring cooperating with said roller to take up the tension in the tapewhen the feed to the light aperture is resumed after an interruption; adrive shaft; a continuously operating motor; a second slippage device.

for normally drivingly connecting said driven shaft to said drive shaft;an electromagnetic control for said second slippage device including anelectromagnet, a circuit including two contacts, one contact movablewith said roller either into engagement with, or to be spaced from, saidother contact, either to establish or interrupt the ourrent in saidcircuit, said roller being responsive to a change in tension in the tapeso to control the engagement of said contacts; said spring cooperatingwith said tape smoothing device to maintain the tape smooth at the lightaperture 5 when the feed to the light aperture is interrupted. 34. In astock quotation projection machine, a tape smoothing device disposed atthe entrance end of the light aperture of a projection machine, a tapepulling device disposed at the posterior end of the light aperture forpulling the tape across the light aperture including a driven shaft, anelectric motor operatively associated with said driven shaft, a rewindreel, a slippage device for drivingly connecting said rewind reel tosaid driven shaft, a roller in engagement with the tape and a springcooperating with said roller to take up the tension in the tape when thefeed to the light aperture is resumed after an interruption, and acontrol for said motor including 20 a circuit for said motor and a pairof contacts in said circuit, one of said contacts being movable withsaid roller either into engagement with, or to be spaced from, the otherof said contacts either to establish or interrupt the current in saidmotor 25 circuit, said roller being responsive to a change 'in tensionin the tape so to control the engagement of said contacts, said springcooperating with said tape smoothing device to maintain the tape smoothat the light aperture when the feed 30 to the light aperture isinterrupted.

35. In a stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture 01' a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture includinga driven member, an electric motor operatively connected to' drive saiddriven member, an electric circuit for said motor including a pair ofcontacts, said tape pulling device including a tension device for takingup the initial slack in the tape when the feed to the light aperture isresumed after an interruption, said tension device being operativelyassociated with said contacts to effect a movement oi said contactsrelative to one another when the slack in the tape is taken up in turnto establish the circuit of said motor to resume the actuation of saidpulling device, said tension device cooperating with said tape smoothingdevice to maintain the tape smooth at the light aperture when the feedto the light aperture is interrupted. I

36. In a stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine, a tape pulling device disposed at the posterior end of thelight aperture for pulling the tape across the light aperture includinga driven member, an electric motor operatively connected to drive saiddriven member, and .an electric circuit for said motor including a pairof contacts, said tape pulling device including a roller and a springcooperating with said roller to take up the initial slack in the tapewhen the feed to the light aperture is resumed, said spring beingoperatively associated with said contacts in turn to reestablish saidmotor circuit to resume the actuation of said tape pulling device, saidspring cooperating with said tape smoothing device to maintain the tapesmooth at the light aperture when the feed to the light aperture isinterrupted.

37. In a stock quotation projection machine, a tape pulling devicedisposed at the posterior end of the light aperture for pulling the tapeacross the light aperture including a driven shaft,

a rewind reel, a slippage device for drivingly conmeeting said rewindreel to said driven shaft, a roller, and a springcooperating with saidroller to take up the tension in the tape when the feed to the lightaperture is resumed after an interruption; a drive shaft, a continuouslyoperating motor; a second slippage device for normally drivinglyconnecting said driven shaft to said drive shaft; an electromagneticcontrol for said second slippage device including an electromagnet, a

circuit including two contacts, one contact movable with said rollereither into engagement with, or to be spaced from, said other contact,either to establish or interrupt the current in said circuit, saidroller being responsive to a change in tension in the tape so to controlthe engagement of said contacts.

I .35. In a stock quotation projection machine, a tape pulling devicedisposed at the posterior end of the light aperture for pulling the tapeacross the light aperture including a driven shaft, an electric motoroperatively associated with said driven shaft, a rewind reel, a slippagedevice for drivingly connecting said rewind reel to said driven shaft, aroller inengagement with the tape and a spring cooperating with saidroller to take up the tension in the tape when the feed to the lightaperture is resumed after an interruption, and a control" for said motorincluding a circuit for said motor and a pair of contacts in saidcircuit, one of said contacts being movable with said roller either intoengagement with, or to be spaced from, the other of said contacts'eitherto establish or interrupt the current in said motor electric motoroperatively connected 'to drive said driven member, an electric circuitfor said motor including a pair of contacts, said tape pulling deviceincluding a tension device for taking up the initial slack in the tapewhen the feed to the vlight aperture is resumed after an interruption,

said tension devicebeing operatively associated -with said contacts toeffect a movement of said contacts relative to one another when theslack in the tape is taken up in turn to establish the circuit of saidmotor to resume the actuation of said pulling device. 2;

40. In a stock quotation projection machine, a tape smoothing devicedisposed at the anterior end of the light aperture of a projectionmachine, means disposed at the posterior end of the light aperture forcontrolling the advance of the tape across the light aperture as thesame is fed thereto including a continuously operating motor, a drivingmember operatively connected to operate with said motor, a drivenmember, said driving member being free to slip relative to said drivenmember when the tension in the tape is increased due to interrupting thefeed to the light aperture, a magnetic device for controlling themovement of said driven member relative to said driving member includingan electromagnet and an electromagnet circuit for said electromagnetincluding a pair of contacts, said controlling means including a tensiondevice for taking up the initial slack in the tape whenthe feed to thelight aperture is resu'med, said tension device being operativelyassociated with said contacts to effeet the movement of said contactsrelative to one another when the slack in the tape is so taken up and inturn to control the electric current through said electromagnet, saidtension device cooperating with said tape smoothing device to maintainthe tape smooth at the light aperture when the feed to the lightaperture is interrupted.

41. In a stock quotation projection machine, a

tape smoothing device disposed at the anterior end of the light apertureof a projectionmachine, means disposed at the posterior end of the lightaperture for controlling the advance of the tape across the lightaperture including a driven shaft, a roller and a spring cooperatingwith said roller to take up the tension in the tape when the feed to thelight aperture is resumed after an interruption; a drive shaft; acontinuously operating motor, a slippage device for drivingly connectingsaid driven shaft to said drive shaft, and an electromagnetic controlfor said slippage device including an electromagnet, a circuit includingtwo contacts, one contact movable with said roller either intoengagement with, or to be spaced from, said other contact either toestablish or to interrupt the current in said circuit, said roller beingresponsive to a change in tension in the tape so to control theengagement of said contacts; said spring cooperating with said tapesmoothing device to maintain the tape smooth at the light aperture whenthe feed to the light aperture is interrupted.

1 AUGUST D. EITZEN;

